https://en.wikipedia.org/wiki/St._Florian_Monastery

..."St. Florian's Priory possesses two organs, the larger one of which is known as the "Bruckner organ" (Brucknerorgel) of more than 7,000 organ pipes. It was played by composer and organist Anton Bruckner, previously a choir boy at the monastery, when he was the organist, between 1848 and 1855. He is buried beneath the organ inside the church...."(Wiki)